Merge pull request #6 from cms-opendata-analyses/katilp-patch-2

Update README.md
cms-opendata-analyses · Dec 12, 2017 · d9c1d8a · d9c1d8a
2 parents 590a453 + b0ea82f
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diff --git a/README.md b/README.md
@@ -30,6 +30,8 @@ Go to the example directory, and compile with `scram b`.
 cd DimuonSpectrum2011
 scram b
 ```
+In order not to overwrite the existing DoubleMu.root, to which you can compare your output, rename it before you run.
+
 Run the example as configured in the configuration file. 
 
 ```